Fume-arrester for regenerative matting-furnaces.



T 0 al whom t may concern I ers at. R

WILLIAM FREDERICK TAYLOR; 0F TACOMA, WASHINGTON.

FUME-ABRESTER FOR REGENERATIVE 'MATTING-FURNACES.

1,040,460. 4 Original application filed `Tune 12, 1908,

Specification of Letters Patent.

Serial No. 438i,247. Divided and this application filed October 23,1.911. Serial No. 656,322.

Patented oct. s, 1912.

Be it known that I, WILLIAM FREDERICK TAYLOR, a citizen of .the UnitedStates, residing at Tacoma, in the county of Pierce and State oflVashington, have invented certain new and useful Improvements inFume-Arresters for Regenerative Matting-l'-` Furnaces, of which thefollowing is a speci cation.

The-objects of the invention are, first, toy

provide a regenerative furnace with a fume arresting device, asillustrated in the accompanying drawing in which# Figure l isa verticalsection lengthwise through the furnace; Fig. 2 is a plan section on theline 2-2; Fig. 3 is a sectional part of the flue to the smoke stack andcontains the condenser.

Similar lettersrefer to similar parts in the several views.

Fire-boxes or combustion chambers are indicated at A A and aredesignedto be used alternately. vEach fire-box is located overV achamber of lues C -C, or checkerwork, constructed of refractory'materials, which open at the bottom into dues B B, connected with thesmoke stack S through external fines F F', which are provided withdampers M M with which to regulate and alternate the draft. Eachfire-box is provided with a forced draft by means of air flues D D',which open the full width of the bottom into the flues B B and which aresupplied with air from the Root blow- B and RV B through the pipes IC E'connected therewith. The force and quantity of air is regulated bymachinery which operates the Root blowers. The heat indicator G showsthe desired amount of heat required. Each fire-box is connected withsmelting hearths H H by means of `ports I I. The furnace is heated bystarting a tire in one of the lire-boxes as A, the

become well heated by M K being closed and M K being open. This causesthe products of combustion to pass through the smelting charnber overthe hearth I-T I-l, through the firebox. A to the -flues B C and F tothe smoke stack S. When the furnace and fines the products 0fcombustion, a v[ire is started in fire-box A and the dampers reversed,and the fire in A is allowed to go down when the flues D and dampers Cbecome heated and the furnace is ready for use.

Ore is put in the furnace through the charging hoppers .I J the orebeing spread and stirred through the doors N N.

natelv, the fresh ore being deposited on the 'hearth farthest from the{ire-box in use, so

that the ore will be roasted preparatory to being subjected to theintense heat of the nearest fire-box when the fire is alternated to it.The fires thus alternated and t-hc .ores being exposed to the productsof combustion alternately from the opposite ends of the furnace, theores' soon become reduced to matte and slag, which readily collects inthe lead well L and is drawn 0H, the slag at the upper tap hole O, andthe bullion at the 'lower tap hole P.

In connection with the foregoing construction I employ my fume arrester.as follows: At Q is located a cold water pipe having outlets designedto discharge alternately into the fluesF and F,`each outlet beingoperated by a valve V V. The spray of cold water discharged from theseoutlets condenses or precipitates all volatilized metals from `thelsmoke and gases passing through the flue. A receptacle or well Ucollects these metals and they are thus saved.

Under the construction described a forced spray of water' is injectedinto the lines leading from the superheating chambers or lues at a pointbetween the passage of the products from the superheaters and the smokestack, and a well is provided to receive the precipitated materials at aoint in advance of the escape of the prolducts into the smoke stack. Inother words Vaforced draft of air isgdriven directly into a flue at thebottom flues and is supplied through a flue independent of the flue by'which the products are carried from-the superheating flue to the smokestack, and this makes itpossible to precipitate and collect valuableprecipitates from the products which pass from the superheating iuethrough an independent flue leading therefrom to the. smoke stack.

This application is'iled as a division of my application tiled June 12,1908, Serial of the superheating` -The hearths are designed to becharged altermnber 438,247 and isy designed to cover- Hie fume arrestingfeature of the invention.

Having described lily-invention what I claim is l 1 In f1regenertiVe-furnace 4having Valve controllediues leading from the lowerpart of the super-heating ues and merging into a smoke stack, nieans'forinjecting a Spray of Water into, the ,escaping behveen the bottom of theswffr-iieuting gases at :i gmini volatilized metals carried of" from diesmelting heart/hs, and :L well in that portion 'of'the Hue openingv intothe smoke stuck for receiving the precipitated metals, subs'izmt-iallyas described.

n testimony whereof I aiix my Signature in presence. of two Witnesses'.

fines and; the smoke stavi: :for reci itatino' E. T. Mooi/i.

Copies of'this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

